注浆引起土体变形及注浆效率的规律研究

程雪松; 赵林嵩; 潘军; 郑刚; 贾建伟; 焦莹

doi:10.13204/j.gyjzG22051213

注浆引起土体变形及注浆效率的规律研究

doi: 10.13204/j.gyjzG22051213

程雪松^1,2,
赵林嵩²,
潘军²,
郑刚^1,2,
贾建伟³,
焦莹³

1. 天津大学滨海土木工程结构与安全教育部重点实验室, 天津 300072;
2. 天津大学建筑工程学院, 天津 300072;
3. 中国建筑第六工程局有限公司, 天津 300451

基金项目:

中建股份科技研发计划资助项目（CSCEC-2020-Z-46）；国家自然科学基金项目（52178343）。

详细信息

作者简介:
程雪松,男,1985年出生,博士,教授。电子信箱:cheng_xuesong@163.com

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- 被引次数: 0
出版历程
- 收稿日期: 2022-05-12

Research on Deformation Laws of Soil Caused by Grouting and Grouting Efficiency

1. MOE Key Laboratory of Coast Civil Structure Safety, Tianjin University, Tianjin 300072, China;
2. School of Civil Engineering, Tianjin University, Tianjin 300072, China;
3. China Construction Sixth Engineering Bureau Corp., Ltd., Tianjin 300451, China

摘要

摘要: 针对注浆引发的土体变形及注浆效率随时间和空间变化规律缺乏系统性的理论研究，而限制注浆在近接施工精细化变形控制中的应用现状，基于现场试验，采用流固耦合数值模拟方法系统研究了土体变形和注浆效率随时间和空间变化的规律，并考虑了注浆量、注浆距离和注浆深度等注浆参数对土体变形及注浆效率的影响。基于此，提出部分注浆控制变形的建议。研究表明：当须要控制土体或者隧道沉降变形时，注浆体顶部与目标对象宜平齐；而须要控制土体或者隧道隆起时，注浆体底部与目标对象宜平齐。随着注浆距离的增大，土体水平和竖向位移、水平位移注浆效率均迅速减小。为保证注浆对变形的效果，注浆距离不应过大。
- 注浆法 /
- 土体变形 /
- 数值模拟 /
- 注浆量 /
- 注浆深度
Abstract: The deformation laws of soil caused by grouting and grouting efficiency with times and space were lack of systematic theoretical research, which hindered the application of grouting in accurate deformation control of proximity construction. Based on the field test, the variation laws of soil deformation and grouting efficiency with time and space were systematically studied by using the numerical simulation method of fluid-solid coupling. Simultaneously, the effects of grouting parameters such as grouting volume, grouting space and grouting depth on soil deformation and grouting efficiency were considered. And based on the study, some suggestions on grouting deformation control were put forward. The study indicated that when it was necessary to control subsidence of the ground or tunnels, it was suggested that the top of the grouted body should be flush with the target object. When it was necessary to control heave of the ground or tunnels, it was recommended that the bottom of the grouted body be flush with the target object. With the increase of grouting space, the horizontal and vertical displacement of soil and the grouting efficiency of horizontal displacement decreased rapidly. In order to ensure the deformation effect caused by grouting, the grouting distance should be not to long.
- grouting method /
- soil deformation /
- numerical simulation /
- grouting volume /
- grouting depth

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参考文献(22)

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